The escalating applications of power electronic circuits also known as
newlinepower converters in energy conversion, hybrid electric vehicles and mission
newlinecritical applications such as aeronautics and military systems, necessitates the
newlinereliability of the Power Electronics Circuit Components (PECC) to be of utmost
newlineconcern. Failure of these PECCs will significantly affect the entire system
newlineoperation in the above-mentioned applications. To ensure reliability of PECCs,
newlinevarious assessment and mitigation procedures are reported in the literature.
newlineHowever, the recent advances like components with high power density and
newlinehigh-temperature applications pose challenges for diagnosing the degradation of
newlinePECCs and assessing their reliability.
newlineThere are two types of faults generally seen with PECCs. They are
newlinehard faults and soft faults. Hard faults are characterized as sudden, catastrophic
newlinefaults and are difficult to predict. On the other hand, soft faults are slow
newlineoccurring faults and are characterized by degradation seen with PECCs due to
newlinethermal and electric stresses. Analyzing the degradation due to the aging of
newlinePECCs of a converter helps in improving the reliability of power converters.
newlineThe Remaining Useful Life (RUL) estimation is a metric used to analyze the
newlinelevel of degradation pertaining to soft faults which in turn facilitates intelligent
newlinepower converter s maintenance and reduces the risk of sudden system failure.
newline

Guide(s): Saravanan, M | Publisher: Chennai | Handle: https://shodhganga.inflibnet.ac.in/handle/10603/713970

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